Пример #1
0
/** If we aren't currently dormant, close all connections and become
 * dormant. */
static void
hibernate_go_dormant(time_t now)
{
  connection_t *conn;

  if (hibernate_state == HIBERNATE_STATE_DORMANT)
    return;
  else if (hibernate_state == HIBERNATE_STATE_LOWBANDWIDTH)
    hibernate_state = HIBERNATE_STATE_DORMANT;
  else
    hibernate_begin(HIBERNATE_STATE_DORMANT, now);

  log_notice(LD_ACCT,"Going dormant. Blowing away remaining connections.");

  /* Close all OR/AP/exit conns. Leave dir conns because we still want
   * to be able to upload server descriptors so people know we're still
   * running, and download directories so we can detect if we're obsolete.
   * Leave control conns because we still want to be controllable.
   */
  while ((conn = connection_get_by_type(CONN_TYPE_OR)) ||
         (conn = connection_get_by_type(CONN_TYPE_AP)) ||
         (conn = connection_get_by_type(CONN_TYPE_EXIT))) {
    if (CONN_IS_EDGE(conn))
      connection_edge_end(TO_EDGE_CONN(conn), END_STREAM_REASON_HIBERNATING);
    log_info(LD_NET,"Closing conn type %d", conn->type);
    if (conn->type == CONN_TYPE_AP) /* send socks failure if needed */
      connection_mark_unattached_ap(TO_ENTRY_CONN(conn),
                                    END_STREAM_REASON_HIBERNATING);
    else if (conn->type == CONN_TYPE_OR) {
      if (TO_OR_CONN(conn)->chan) {
        channel_mark_for_close(TLS_CHAN_TO_BASE(TO_OR_CONN(conn)->chan));
      } else {
         connection_mark_for_close(conn);
      }
    } else
      connection_mark_for_close(conn);
  }

  if (now < interval_wakeup_time)
    hibernate_end_time = interval_wakeup_time;
  else
    hibernate_end_time = interval_end_time;

  accounting_record_bandwidth_usage(now, get_or_state());

  or_state_mark_dirty(get_or_state(),
                      get_options()->AvoidDiskWrites ? now+600 : 0);
}
Пример #2
0
/** Log, at severity <b>severity</b>, information about each circuit
 * that is connected to <b>conn</b>.
 */
void
circuit_dump_by_conn(connection_t *conn, int severity)
{
  circuit_t *circ;
  edge_connection_t *tmpconn;

  for (circ=global_circuitlist;circ;circ = circ->next) {
    circid_t n_circ_id = circ->n_circ_id, p_circ_id = 0;
    if (circ->marked_for_close)
      continue;

    if (! CIRCUIT_IS_ORIGIN(circ))
      p_circ_id = TO_OR_CIRCUIT(circ)->p_circ_id;

    if (! CIRCUIT_IS_ORIGIN(circ) && TO_OR_CIRCUIT(circ)->p_conn &&
        TO_CONN(TO_OR_CIRCUIT(circ)->p_conn) == conn)
      circuit_dump_details(severity, circ, conn->conn_array_index, "App-ward",
                           p_circ_id, n_circ_id);
    if (CIRCUIT_IS_ORIGIN(circ)) {
      for (tmpconn=TO_ORIGIN_CIRCUIT(circ)->p_streams; tmpconn;
           tmpconn=tmpconn->next_stream) {
        if (TO_CONN(tmpconn) == conn) {
          circuit_dump_details(severity, circ, conn->conn_array_index,
                               "App-ward", p_circ_id, n_circ_id);
        }
      }
    }
    if (circ->n_conn && TO_CONN(circ->n_conn) == conn)
      circuit_dump_details(severity, circ, conn->conn_array_index, "Exit-ward",
                           n_circ_id, p_circ_id);
    if (! CIRCUIT_IS_ORIGIN(circ)) {
      for (tmpconn=TO_OR_CIRCUIT(circ)->n_streams; tmpconn;
           tmpconn=tmpconn->next_stream) {
        if (TO_CONN(tmpconn) == conn) {
          circuit_dump_details(severity, circ, conn->conn_array_index,
                               "Exit-ward", n_circ_id, p_circ_id);
        }
      }
    }
    if (!circ->n_conn && circ->n_hop &&
        tor_addr_eq(&circ->n_hop->addr, &conn->addr) &&
        circ->n_hop->port == conn->port &&
        conn->type == CONN_TYPE_OR &&
        !memcmp(TO_OR_CONN(conn)->identity_digest,
                circ->n_hop->identity_digest, DIGEST_LEN)) {
      circuit_dump_details(severity, circ, conn->conn_array_index,
                           (circ->state == CIRCUIT_STATE_OPEN &&
                            !CIRCUIT_IS_ORIGIN(circ)) ?
                             "Endpoint" : "Pending",
                           n_circ_id, p_circ_id);
    }
  }
}
Пример #3
0
/** Remove all entries from the identity-to-orconn map, and clear
 * all identities in OR conns.*/
void
connection_or_clear_identity_map(void)
{
  smartlist_t *conns = get_connection_array();
  SMARTLIST_FOREACH(conns, connection_t *, conn,
  {
    if (conn->type == CONN_TYPE_OR) {
      or_connection_t *or_conn = TO_OR_CONN(conn);
      memset(or_conn->identity_digest, 0, DIGEST_LEN);
      or_conn->next_with_same_id = NULL;
    }
  });
Пример #4
0
/** Called when we get data from a cpuworker.  If the answer is not complete,
 * wait for a complete answer. If the answer is complete,
 * process it as appropriate.
 */
int
connection_cpu_process_inbuf(connection_t *conn)
{
  char success;
  char buf[LEN_ONION_RESPONSE];
  uint64_t conn_id;
  circid_t circ_id;
  connection_t *tmp_conn;
  or_connection_t *p_conn = NULL;
  circuit_t *circ;

  tor_assert(conn);
  tor_assert(conn->type == CONN_TYPE_CPUWORKER);

  if (!buf_datalen(conn->inbuf))
    return 0;

  if (conn->state == CPUWORKER_STATE_BUSY_ONION) {
    if (buf_datalen(conn->inbuf) < LEN_ONION_RESPONSE) /* answer available? */
      return 0; /* not yet */
    tor_assert(buf_datalen(conn->inbuf) == LEN_ONION_RESPONSE);

    connection_fetch_from_buf(&success,1,conn);
    connection_fetch_from_buf(buf,LEN_ONION_RESPONSE-1,conn);

    /* parse out the circ it was talking about */
    tag_unpack(buf, &conn_id, &circ_id);
    circ = NULL;
    tmp_conn = connection_get_by_global_id(conn_id);
    if (tmp_conn && !tmp_conn->marked_for_close &&
        tmp_conn->type == CONN_TYPE_OR)
      p_conn = TO_OR_CONN(tmp_conn);

    if (p_conn)
      circ = circuit_get_by_circid_orconn(circ_id, p_conn);

    if (success == 0) {
      log_debug(LD_OR,
                "decoding onionskin failed. "
                "(Old key or bad software.) Closing.");
      if (circ)
        circuit_mark_for_close(circ, END_CIRC_REASON_TORPROTOCOL);
      goto done_processing;
    }
    if (!circ) {
      /* This happens because somebody sends us a destroy cell and the
       * circuit goes away, while the cpuworker is working. This is also
       * why our tag doesn't include a pointer to the circ, because we'd
       * never know if it's still valid.
       */
      log_debug(LD_OR,"processed onion for a circ that's gone. Dropping.");
      goto done_processing;
    }
    tor_assert(! CIRCUIT_IS_ORIGIN(circ));
    if (onionskin_answer(TO_OR_CIRCUIT(circ), CELL_CREATED, buf+TAG_LEN,
                         buf+TAG_LEN+ONIONSKIN_REPLY_LEN) < 0) {
      log_warn(LD_OR,"onionskin_answer failed. Closing.");
      circuit_mark_for_close(circ, END_CIRC_REASON_INTERNAL);
      goto done_processing;
    }
    log_debug(LD_OR,"onionskin_answer succeeded. Yay.");
  } else {
    tor_assert(0); /* don't ask me to do handshakes yet */
  }

done_processing:
  conn->state = CPUWORKER_STATE_IDLE;
  num_cpuworkers_busy--;
  if (conn->timestamp_created < last_rotation_time) {
    connection_mark_for_close(conn);
    num_cpuworkers--;
    spawn_enough_cpuworkers();
  } else {
    process_pending_task(conn);
  }
  return 0;
}